“Nyambi will play Jay Dipersia, the firm’s long-time investigator. Smart, witty, and even-tempered, he’s the kind of guy you want on your side in a fight. He and Marissa Gold (Sarah Steele), Lockhart’s new assistant with aspirations to be an investigator, form an unlikely friendship as she pushes him to teach her the intricacies of investigation. Nyambi’s first episode is Sunday night.”